Module Coap.Message

type t
type kind =
| Confirmable
| Nonconfirmable
| Acknowledgement
| Reset
type code =
| Empty
| Request of [ `Get | `Post | `Put | `Delete ]
| Response of [ `Created | `Deleted | `Valid | `Changed | `Content | `Bad_request | `Unauthorized | `Bad_option | `Forbidden | `Not_found | `Method_not_allowed | `Not_acceptable | `Precondition_failed | `Request_entity_too_large | `Unsupported_content_format | `Internal_server_error | `Not_implemented | `Bad_gateway | `Service_unavailable | `Gateway_timeout | `Proxying_not_supported ]
val pp_code : Stdlib.Format.formatter -> code -> unit
type content_format = [
| `Text of [ `Plain ]
| `Application of [ `Link_format | `Xml | `Octet_stream | `Exi | `Json ]
]
type option =
| If_match of string
| Uri_host of string
| Etag of string
| If_none_match
| Uri_port of int
| Location_path of string
| Uri_path of string
| Content_format of content_format
| Max_age of int
| Uri_query of string
| Accept of int
| Location_query of string
| Proxy_uri of string
| Proxy_scheme of string
| Size1 of int
val make : ?⁠version:int -> ?⁠id:int -> ?⁠token:string -> code:code -> ?⁠kind:kind -> ?⁠options:option list -> string -> t

Coap message constructor.

val version : t -> int
val id : t -> int
val kind : t -> kind
val code : t -> code
val token : t -> string

Message token used to match a response with a request.

Token values may be 0 to 8 bytes in length.

val options : t -> option list
val path : t -> string list

Extract request path from message options.

val payload : t -> string
val is_confirmable : t -> bool
val decode : string -> (t, error) Stdlib.result
val encode : t -> string
val pp : Stdlib.Format.formatter -> t -> unit
val max_size : int

Maximum safe message size.

https://tools.ietf.org/html/rfc7252#section-4.6